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Issue 38, 2014
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On the scaling behavior of electric conductivity in [C4mim][NTf2]

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In this work we examine, for the first time, the molar conductivity behavior of the deeply supercooled room temperature ionic liquid [C4mim][NTf2] in the temperature, pressure and volume thermodynamic space in terms of density scaling (TVγ)−1 combined with the equation of state (EOS). The exponent γσ determined from the Avramov model analysis is compared with the coefficient obtained from the viscosity studies carried out at moderate temperatures. Therefore, the experimental results presented herein provide the answer to the long-standing question regarding the validity of thermodynamic scaling of ionic liquids over a wide temperature range, i.e. from the normal liquid state to the glass transition point. Finally, we investigate the relationship between the dynamic and thermodynamic properties of [C4mim][NTf2] represented by scaling exponent γ and Grüneisen constant γG, respectively.

Graphical abstract: On the scaling behavior of electric conductivity in [C4mim][NTf2]

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The article was received on 22 May 2014, accepted on 11 Aug 2014 and first published on 12 Aug 2014

Article type: Paper
DOI: 10.1039/C4CP02253J
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Citation: Phys. Chem. Chem. Phys., 2014,16, 20444-20450

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    On the scaling behavior of electric conductivity in [C4mim][NTf2]

    Z. Wojnarowska, G. Jarosz, A. Grzybowski, J. Pionteck, J. Jacquemin and M. Paluch, Phys. Chem. Chem. Phys., 2014, 16, 20444
    DOI: 10.1039/C4CP02253J

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